256122266 has 16 divisors (see below), whose sum is σ = 390364800. Its totient is φ = 126011808.

The previous prime is 256122259. The next prime is 256122271. The reversal of 256122266 is 662221652.

256122266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46865 + ... + 52043.

It is an arithmetic number, because the mean of its divisors is an integer number (24397800).

Almost surely, 2^256122266 is an apocalyptic number.

256122266 is a deficient number, since it is larger than the sum of its proper divisors (134242534).

256122266 is a wasteful number, since it uses less digits than its factorization.

256122266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573.

The product of its digits is 17280, while the sum is 32.

The square root of 256122266 is about 16003.8203564024. The cubic root of 256122266 is about 635.0614907283.

The spelling of 256122266 in words is "two hundred fifty-six million, one hundred twenty-two thousand, two hundred sixty-six".